1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "media/cast/video_sender/fake_software_video_encoder.h" 6 7 #include "base/json/json_writer.h" 8 #include "base/values.h" 9 #include "media/cast/transport/cast_transport_config.h" 10 11 #ifndef OFFICIAL_BUILD 12 13 namespace media { 14 namespace cast { 15 16 FakeSoftwareVideoEncoder::FakeSoftwareVideoEncoder( 17 const VideoSenderConfig& video_config) 18 : video_config_(video_config), 19 next_frame_is_key_(true), 20 frame_id_(0), 21 frame_id_to_reference_(0), 22 frame_size_(0) { 23 } 24 25 FakeSoftwareVideoEncoder::~FakeSoftwareVideoEncoder() {} 26 27 void FakeSoftwareVideoEncoder::Initialize() {} 28 29 bool FakeSoftwareVideoEncoder::Encode( 30 const scoped_refptr<media::VideoFrame>& video_frame, 31 transport::EncodedFrame* encoded_image) { 32 encoded_image->frame_id = frame_id_++; 33 if (next_frame_is_key_) { 34 encoded_image->dependency = transport::EncodedFrame::KEY; 35 encoded_image->referenced_frame_id = encoded_image->frame_id; 36 next_frame_is_key_ = false; 37 } else { 38 encoded_image->dependency = transport::EncodedFrame::DEPENDENT; 39 encoded_image->referenced_frame_id = encoded_image->frame_id - 1; 40 } 41 42 base::DictionaryValue values; 43 values.SetBoolean("key", 44 encoded_image->dependency == transport::EncodedFrame::KEY); 45 values.SetInteger("ref", encoded_image->referenced_frame_id); 46 values.SetInteger("id", encoded_image->frame_id); 47 values.SetInteger("size", frame_size_); 48 base::JSONWriter::Write(&values, &encoded_image->data); 49 encoded_image->data.resize( 50 std::max<size_t>(encoded_image->data.size(), frame_size_)); 51 return true; 52 } 53 54 void FakeSoftwareVideoEncoder::UpdateRates(uint32 new_bitrate) { 55 frame_size_ = new_bitrate / video_config_.max_frame_rate / 8; 56 } 57 58 void FakeSoftwareVideoEncoder::GenerateKeyFrame() { 59 next_frame_is_key_ = true; 60 } 61 62 void FakeSoftwareVideoEncoder::LatestFrameIdToReference(uint32 frame_id) { 63 frame_id_to_reference_ = frame_id; 64 } 65 66 } // namespace cast 67 } // namespace media 68 69 #endif 70
